Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Before
After
Before
After
Before
AfterFast, Reliable General Contractor Across San Jose
Hiring a General Contractor in San Jose means choosing someone who understands what our dry summers, salt-tinged bay air, and seismic retrofit rules do to a house. We’re Penhallow Remodeling, led by Trevor Nash, and we serve San Jose homeowners with written pricing, real arrival windows, and a 365-Day Done Right Promise on every project. If you’re planning a kitchen remodel, an ADU, or a whole-home renovation, call (936) 259-2607 and we’ll give you a written number before any work starts. Not a range. Not a ballpark. A written price you can hold us to.
Key Takeaways
- Salt air changes the materials: In Alviso and the North First Street corridor, we specify hot-dip galvanized fasteners and marine-grade caulk, not standard steel.
- Seismic rules are real: Ordinance 30016 requires soft-story retrofits on thousands of 1960s and 1970s wood-frame apartment buildings across San Jose.
- ADU permits can move fast: Using San Jose’s pre-approved standard plan library cuts approval from 6 to 12 months down to 2 to 4 weeks.
- Written price before work starts: Every job gets a line-item quote, a defined arrival window, and a written guarantee.
- We serve all of San Jose: From Berryessa to Almaden, Willow Glen to Alum Rock, and everywhere in between.
Why Penhallow Remodeling Is San Jose’s Preferred General Contractor Company
We didn’t earn our place in San Jose by being the cheapest bid on the board. We earned it by showing up when we said we would, putting the price in writing, and standing behind the work for a full year after the crew leaves. Our General Contractor team has spent years working inside San Jose’s housing stock: 1950s and 1960s wood-frame tract homes in Cambrian and Berryessa, pre-1930 Craftsman homes in Willow Glen and Japantown, and the newer high-density builds scattered through North San Jose. Each neighborhood brings its own set of structural questions, and we’ve seen enough of them to know what’s behind a wall before we open it.
San Jose homeowners tell us the same thing over and over: they’ve been burned by a contractor who gave a verbal estimate that doubled after demo day. That’s why we operate under The Kingswell Way, the standard set by our parent company back in 2004. Say the price before the work. Show up in the window we gave. Leave the place cleaner than we found it. And if something fails inside 365 days, we come back and fix it at no charge. No re-inspection fee. No service call. It’s in writing on every project.
Residential General Contractor in San Jose
A Residential General Contractor in San Jose does more than swing a hammer. We coordinate permits, schedule inspections, manage subcontractors, and make sure the work passes code the first time. In San Jose, that code work is not a formality. The Calaveras Fault runs directly through the Alum Rock and East Foothills neighborhoods, which means fault-setback zone compliance is a routine part of the permit stage. The city’s building permit office is notoriously backlogged, with residential permits sometimes taking 6 to 12 months through standard review. A general contractor who knows how to navigate that system saves you months of waiting.
When a San Jose homeowner calls us for a kitchen remodel, the conversation starts with the written price. A typical kitchen remodel in San Jose runs $16,520 to $53,100, depending on layout, cabinet line, and countertop material. A small kitchen remodel typically lands between $10,620 and $23,600. We install KraftMaid and Wellborn cabinetry, and Cambria, Silestone, or Caesarstone countertops, so the materials behind our guarantee are as solid as the promise itself.
Seismic Strengthening and Soft-Story Retrofits
San Jose’s soft-story seismic retrofit ordinance, Ordinance 30016, adopted in 2018, mandates strengthening for thousands of 1960s and 1970s wood-frame apartment buildings. That’s a legally required retrofit market that dwarfs anything in Sunnyvale or Santa Clara. If you own a wood-frame apartment building with tuck-under parking, you need a contractor who has done this work before. We have.
ADU Construction and Permit Acceleration
An ADU in San Jose runs $106,200 to $259,600, but the bigger variable is time. The city’s pre-approved ADU standard plan library can cut approval from 6 to 12 months down to 2 to 4 weeks. We use those plans whenever the lot allows it. That permitting fluency is often the deciding factor when homeowners choose us.
Hire a General Contractor in San Jose
When you Hire a General Contractor in San Jose, you’re buying two things: someone who answers the phone, and someone who stands behind the work. We answer the phone 24/7 with a live person. Not an answering service. Not a voicemail prompt. A real person who can schedule your free estimate and get your questions answered. Every technician who walks into your home is background-checked and in uniform, so you know exactly who you’re letting through the door.
The cost of hiring us depends on the project. A home addition in San Jose runs $53,100 to $153,400. A garage conversion typically lands between $35,400 and $94,400. A bathroom remodel runs $10,620 to $33,040. We give you a written line-item quote before any work starts, and the number on that quote is the number on the invoice. If we need to change something mid-project, we write a change order and you approve it before we proceed. No surprises at the door.
Whole-Home Remodels and Additions
Whole-home remodels in San Jose often start with a structural question: what’s under the house? Most of the city’s 1950s and 1960s tract homes sit on post-and-pier or cripple-wall foundations that fail modern seismic standards. We often recommend engineered pier-and-grade-beam foundations in low-lying areas near the bay, particularly in Alviso and the North First Street corridor, where mapped liquefaction zones make post-tensioned slabs the safer choice.
Exterior Work and Material Specs
San Jose’s dry Mediterranean summers make year-round exterior construction possible. But the salt air near the bay changes what we specify. In Alviso, we tore open a 1965 tract home’s bathroom wall and found the original galvanized supply lines had corroded from bay-air salt intrusion, not just age. We replaced them with PEX and sealed every penetration with marine-grade caulk. The homeowner had already paid twice for quick fixes that failed within a year because the subfloor was never dried and the fasteners were standard steel, not hot-dip galvanized.
Trusted Brands We Service in San Jose
We don’t install products we wouldn’t put in our own homes. For San Jose projects, we specify James Hardie siding for salt-air resistance, Kohler and Moen fixtures for wet areas, and Belgard or Unilock pavers for exterior work. When the project calls for a specific look or performance standard, we also work with brands like Abodu and Dvele for prefabricated ADU options, which can work well on San Jose lots where setback and height restrictions leave little room for a traditional build. We keep a local stock of common parts and materials for San Jose jobs, which means fewer delays when a change order requires a specific finish or a replacement part mid-project.
Common General Contractor Problems We See in San Jose Homes
- Salt-air corrosion on standard steel fasteners. In Alviso and North First Street bayfront zones, we regularly replace fasteners that have rusted through within 3 to 5 years. We specify hot-dip galvanized or stainless hardware on any exterior job within a mile of the bay.
- Original post-and-pier foundations that fail modern seismic standards. Most 1950s and 1960s tract homes in East San Jose, Berryessa, Cambrian, and Almaden were built before modern seismic codes. We see cracked cripple walls and settled floors on nearly every whole-home remodel we open up.
- Generic ADU plans stuck in permit review. Homeowners who submit a custom ADU plan without using San Jose’s pre-approved standard plan library routinely wait 6 to 12 months. We use the city’s standard plans whenever possible to cut that to 2 to 4 weeks.
- Water intrusion in pre-1930 structures. Willow Glen and Japantown have a significant layer of Craftsman and Victorian homes. Original lath-and-plaster walls hide water damage that goes unnoticed until a remodel opens the wall, which is why we always plan for substrate repair in our written quotes on older homes.
Pricing for General Contractor in San Jose, CA
Here’s what you can expect to pay for common General Contractor projects in San Jose. These ranges reflect our actual market and include labor, materials, and permit coordination. The big variables are foundation type, finish level, and whether seismic retrofit work is required.
| Project | San Jose Price Range |
|---|---|
| ADU Construction | $106,200 – $259,600 |
| Home Addition | $53,100 – $153,400 |
| Garage Conversion | $35,400 – $94,400 |
| Kitchen Remodel | $16,520 – $53,100 |
| Bathroom Remodel | $10,620 – $33,040 |
| Roof Replacement | $9,440 – $23,600 |
| Window Replacement | $5,310 – $17,700 |
| Paver Driveway Installation | $8,260 – $21,240 |
If you’re comparing bids, ask every contractor the same question: is this number written, and does it include permits? A verbal estimate that changes at the door is not an estimate. Call (936) 259-2607 and we’ll give you a written line-item quote. Free, with no obligation.
We Also Serve Cities Near San Jose
Our crews serve San Jose and the surrounding communities. If you’re in Milpitas, Santa Clara, Sunnyvale, or Campbell, we can typically schedule your free estimate within the same week. The same written pricing and 365-Day Done Right Promise apply everywhere we work.
Serving San Jose, CA - Our Local Coverage Area
We’re based in the San Jose area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About General Contractor in San Jose
Yes, if your building is a wood-frame structure with soft-story construction (typically tuck-under parking), Ordinance 30016 requires a seismic retrofit. The deadline depends on your building’s specific designation, but most 1960s and 1970s buildings in San Jose are subject to the ordinance. A retrofit involves adding steel moment frames or shear walls to the soft story. Call (936) 259-2607 and we’ll review your building’s status and give you a written estimate.
Salt air accelerates corrosion on standard steel fasteners and untreated lumber within 3 to 5 years. In Alviso and the North First Street corridor, we specify hot-dip galvanized or stainless hardware, marine-grade caulk on every exterior penetration, and treated lumber rated for ground contact. The material cost is higher upfront, typically 10 to 20 percent more than inland-spec materials, but the inland spec will fail and cost you far more within a decade. Call (936) 259-2607 for a written quote on coastal-spec work.
Yes. San Jose maintains a library of pre-approved ADU standard plans that can cut permit approval from 6 to 12 months down to 2 to 4 weeks. We use these plans whenever your lot and project scope allow it. Not every lot qualifies, but we’ll tell you up front if yours does. Call (936) 259-2607 and we’ll walk you through the options.
The California Geological Survey maps Alviso and much of the North First Street corridor as liquefaction hazard zones. New builds there typically require engineered pier-and-grade-beam foundations or post-tensioned slabs rather than a standard shallow footing. This adds significant design and construction cost, but skipping it leads to settlement and failed inspection sign-off after the first rainy season. We plan for this from the first site visit, not after the permit is rejected.
We write every allowance into the original contract. If you pick a cabinet line or countertop material that costs more than the allowance, we write a change order with the exact dollar amount and you approve it before we order anything. No verbal approvals. No surprise charges at the end. The written price you get on day one is the price you pay unless you choose to upgrade something. Call (936) 259-2607 for a free written estimate on your San Jose project.
Get Your Written Estimate
Planning a remodel in San Jose? Call (936) 259-2607 and ask for Trevor Nash. We’ll schedule your free estimate, put the price in writing, and explain what substrate means while we’re at it. Dispatch and scheduling are coordinated from our San Francisco Bay Area office; crews serve San Jose locally. Every job gets a written price, a defined arrival window, background-checked uniformed technicians, and a 365-Day Done Right Promise in writing. That’s the Kingswell Way.
Written by Trevor Nash, Owner at Penhallow Remodeling, serving San Jose, CA.